Method of manufacturing plates.



H. E. SHELDHL MLTHOD F MANUFCTLRING PLATES.

APPLlcATIoN nur nume, 190m 902,767. Patented Nov. 3. 1908.

HARRY E. SHILIJON, Ulf PI'l"l`SIURG, PENNSYLVANIA.

METHOD OF MANUFACTURING PLATES.

Specification of Letters Patent.

Patented Nov. 3, 1908.

Application led January 2B. 1903. Serial Nor 140,474.

To all whom 'it 'may aannam.'

Be il known lliiit I, Ilmiilii E. Hiiiciinnxj. a ritizeii of the l'iiiled Hliilew` residing :il liltsliurg, in l'lie rnunly nl" Alli-glieli)v unil Stille rif Priiiii'liiiniii, liiire invented ni disfnveied new und useful liiiprnveinen in Methods nl' Mzinu'l'iir-luriiig; lliill-s. nl irliirli lli(l following is :i speeifif-iilinii.

In (he :wennipiiiiyiiig' drawings whir'li niuke piii't m" lhis Speeifirnlinn. Figure l. 'n4 :i pluri View wlimriiigg,f u piu'liV nl' Shel-ls willi lh? edges lhei'eiil' niilrhed :ind rugged zii; llir'v :ippeur when llie rolling nl' lliil priiliV iy linislied, und Fig. 2 is :in eleiiil inn nl' u sepa ruled pile nf liliuiliw` vul l'inni :i rii'elil shown on Fig. 1.

My novel prof-msl reliilee ln lliv ni:i|iul`iii-- lure of lRhei-,l iiielzil :ind iln nlijei-lri :ire lii sare ii liii'ge peieeiiliige nl wliul would lil ruine si-i'iip il' lhe ii-iuiil ii'ullinrls' nl' nizinufiil'lure were l'ollnwi-d: ln rliiiiiinilll llir shearing;r nl' llir riilleil ldiei-lx` ln nlziinlurd .sizeHI :ilid lo #uw liuul :ind expensin the piekliimr fipeiiilinii.

()i-(liiiiilily, lwri ur slieels :ire unide inln :i pile :ind pussed llii'nug'li llie Hille iiiid run-li slii'els nf llie park :b ui:i r slieli together :ire lnin iipiirtsn llilil llir elim-lry nizi'i' lie liundlrd singly in llieil' ulheipieul lriulnielil. wliili iiivnlre` :inning nlliri4 lliiugw. pil-hline'. rleiining. :lil-:ii'ing sind .kliinipiiigrI r|`lnl l'il'liing l0 nuire, usuzilly six,

rullii-r llizin Huug'hl :ind in Hueli uw llie l lori-e willi wliirli lliey nlirl( lngi'ellier Hlinlild he llie leii sl prizslsilile.

ln iiiy prrii-ws l -uini in every :irl nl' rollingf u pillI if :slit-ehv lo nizil 1l llie slieexlhslick logelliei' inld :i piu-l( whirli will nol sepaiiiil'e or .-illfiw lli(` heels ln \lp 0|' ('riiwl during,r lheiiI sulmequeiil lreiiluienl. This is iiceoiiipli`zlied h v liringifiug.;y llii` plates up lo zi sulfiril-lill)r high ll|ii|wriilure und so il'eg'ulziling lliil pressure nl' llnl i'iill llnil llie sheels Ishiill heroine nuire ni" less welded together; nl :iiiy riile, llie leniperiilui'e und pressure iiiusl lie surli lliiil, during ull lln` subsequent liunllingr if llill rolled puck, the latter will reiniiiii inliirrl. If the ybheels of lhe pack are not sul'lleieiilly stuck together, the severe lilnw, pressures nur] strfiinis` produced by 1' llii- She: r: und pie---|a-` will srpzirule llie puel; und lli||- deli-:il lliiiilijii-l l huw in View. Fri. I nell :i r-rindilinii nl Ailie Nliell* whirli, in llilii'illnuly przillil'e. i@ :i diwulrnuluge.

:ilr sipzirulvlr pirlnil up :nul phil-rd in linlduw nl' pii'lcling i'rziles willi spin'i's lielweeii .ilul :iiljin-riil elim-h` The ri'ulv` willi lli(` heim ll will liu ll'iinnrl iipnii opening` prnpsmile. nr wnuld lie-sullirienlly` i-le'zin or l'reil l'lnni hulle. il1 iiril iipeiiril while lun lnil, ln wuri'unl llie niiiisseinn nl' pil-hline :ill liul iluI lwn nulside slierls`y liern'uw. il' llie iiir luis lwrn exllulled l'i'nni minimi-l willi lliiinni-r slirrls. lliy will nul liif'niiii` oxidized. llri'i ugiiin, is :in inipniliinl li-p in ini' |i-ii:\\ risc.. lliix pieklingml' lliiA pui-liv willniul npiiiA iii;' lln` suine, eilliei' wholly nr pzirlly. |li-r is :i Haring nul only in llupirli'liniI mlulinii. lull iilsn in lli(` handling. im` :i wluile pin-li' riin lie im expeililiiiuil)y pirli'led uw ii .-iii li Hlirel,

in iv lo rleziii llul r\'lieils wliil'li were lirlwern llill exterior slierlx nl llie purl(A ln llul ilhniil |ii'uelii'r llie epuiuled shi-els :iiislieziieil ir squared lli iel'luin sliiniliird size4 :and ln. no rilliers. lli llilI Vulling" nl' ihr pui-lis llie presnui'inl' the will ruim-s lhe nieliil nl' llie .wheels li spi'eiiil-{ir lluw nul in llie planes nl' llie lu-els. wliiii-lrv llie pui-hs liei'finu lliiunei' :ind` riinsequenlly lli(I indi- \irluul ulivi-lsy llii'renl lieinnir lziigei'. 'l`lie inf-lill dni-5I nul lliiw iii' squeeze inl rrrnliY :il llil` Herei'ail edges nl' lliil slieels liiil pui-linnn` lin-rem" lln\'.iziillier lliziii nlliers und lhe edges heroine siiniewliiil lirnlien und nnlelied :is: shown :il .if on lhe dinwing.

'Ilnl dnlled line i/ shows llie lSize nl' llie lui'gesl slieel llizil` (':in lie eulnul. ll` n lzii'gii' sized lilzink were ln lie rullini. ils edges would iinl he perl'erl, :is they would inelude swine nl' llirY iinliflies w. Il :i Hnnillei' stiiiidzird sized Hlieel were ln liey vul mil llie wiisle would lie iiiiicli inl-reused. )rdiiiairily :in in h will be (-ul l'rnni llie ISider-i und l'rnni lnui to `Six inches freni une ur bulli ends, and l'he cutoff edges will `l'm'in Waste or scrap.

In order to 0et` perfect sheets of any Standard Size, or exemple, sheets thirty sons Who separate the piles into indivi ual inches wide, the sheets must be rolled at least l thirty-two inches Wide, so that, when sheared to the required width, none of the breaks or notches on the edges will be included. In the common practice, the rolled and pickled sheets Will be sheared to the standard size, even if the edges are not broken or notched t to thc shearing line y, because the shearing machine is set for that standard size and the change to a smaller size would involve too great a loss of time and the operator will not have time to inspect each sheet to see what standard size it can he cut to. Any inspection of the sheets would add materially to the cost of manufacture.

In the practice of all the steps of my invention, I avoid the shearing of the sheets; but 1 may, of course, shear the pack to some standard .size before separating the sheets, it' the product; is desired in squared or rectan- Il gular sheets. Preferably l omit altogether l, the shearing and send the packs to a stampl l i l l l l ing machine which blanks out a number of piles of blanks,.thc circle .a indicating how the blanks will be cut from the pack.

It is not" practical to stamp or shear two or more loosely superposed metal sheets as they will slip or crawl on each other. There fore, in order to prevent the crawl of the sheets I desire to have the sheets of the pack remain stuck together not only until the pack is pickled, but also until it has been sheared or stamped into blanks, z. If the pack be not rolled so as to keep the sheets stuck together until they are sheared or stamped, then a part of the objects of my invention will not be attained. rPhe sticking of the sheets together so that they will stay together during subsequent treatment should not be left to chance, if the best results are' expected..

After the piles of small blanlf': have'ibeen stamped they are sent. to the openers, or erblanks. The blanks being small will be opened easily compared wlth the force retuired to open the packs as they come from t tie rolls, because the edges of the sheets in the packs are somewhat interlocked by means of the interlocking of the broken edges of thc sheets. This is quite an advantage over the old way and is uite evident even in the separation of the sicets of squared packs, that is, packs cut with rectangular corners.

In case a bad spot occurs in the middle of one sheet and the defect is transmitted in rolling to several or all of the other sheets of the pack, cach sheet would, by the old process, he spoiled, as it is torn from the con tiguous sheet; but it the pack be stamped many cases avoid the necessity of annealing` thc blanks bel'ore shearing or stamping.

It is clear-[hatt my method in its preterrwl form may be modified, lor example, the pickling may be in some instances eliminated;

the rolled pack may be separated into n plurality ol packs lnflorc stamping; the u'n opened pack may be pickled and thcn shearcd und stamped; or the unopened pack may lic pickled, and then opened and stamped` or opened and shcarcd and stamped. The process may bc othertyise modified and I do not therefore desircto limit myself to thc practice ot' all the step:y indicated, but l desire protection on the various subprouesses thereof` and on .auch l changes as may fairly come within the scope olE my in\ ention.

Having' described my invention, I claim c---vl'. In the manu facture of sheet metal, rolling a plurality of sheets so that they become incipiently Welded or adhere together into a puck to such an extent` that` they will remain together during subsequent treatment, sus scqucntly stampin a" plurality of said sheets into a plurality o' blanks, and then separating,r the welded or adherent blanks.' i Q.. In the manufacture of sheet metal, rolling a plurality of sheets so that the same become incipienlly welded or adhere to gether into a pack to such an extent that '1 they will remain Digs-,ther during,r subsequent treatment, and picklingl .1 plurality of the sheets while in such welded or adherei'nt con-A dition.

3. The method of nninu'lurturing sheets of metal, which consists in heating` the sheets, rolling a plurality ol' superposed heated sheets into an adherent pack, treating'v thc pack with a picklingr solution to remove the scale, stamping separato packs of blanks from said adherent park, and separating the sheets of the packs of blanks.

Signed at Pittsburgr this 19th day of Jan nary 1903.

IIA RRY E. SH'ELDON.

lVitnesses:

A. M. S'mnN, F. N. BARBER.

lllii 

